Roller slide for radial arm shapers



Sept. 2, 1952 PANKONIN 2,608,908

ROLLER SLIDE FOR RADIAL ARM SHAPERS 2 SHEETSSHEET 1 Filed Sept. 23, 1948 5 4, N I 9 u- INVENTOR. EAR L T. PANKONIN ATT'YS Sept. 2, 1 E. T. PANKONIN 2,503,908

ROLLER SLIDE FOR RADIAL ARM SHAPERS Filed Sept. 25, 1948 2 SHEETS-SHEET 2 INVENTOR: EARL T. PANKONIN ATT'YS Patented Sept. 2, 1952 ROLLER SLIDE FORRADIAL ARM SHAPERS Earl T;'Pankonii1,10liicago, Illl, assignor to nsrud Machine. Works, Inc., Chicago, 111.

Application September 23, 19a, S'erial'No. 50,777-

Claims; (Cl. 90.-13.3)

This invention relates to automatic guide rollers' for radial arm shapers and particularlyto power actuated shiftable guide rollers'for caus ing disengagement of the cutter from the work at end of the radial arm parallel with the axis of' the-motor 2 and the cutter spindle 3; and the proved 'sli'de mechanism and its operating means,

are mounted.

In the form shown the bottom end of the sup port'column 5 is providedwithan enlarged foot,

orend portion 6, in which a horizontally disposed i slide I is mounted between inwardly cut V- predetermined periods during the operation or 5 shaped groovesaformedinthe bottom surfaceof radial arm shapers. the foot as shown in Fig; 52

The main objects of this invention are to 'pro- The grooves 8 extend transversely across the" vide an improved slidably mounted support for bottomof the foot fitoward theaxis ofthe cutthe cutter guide roller of radial arm shapers; to" c ter'4; and the slide 1, which is shiftable along provide an'improved power actuated guide-roller 10 the grooves 8; extends a considerable distance slide for radial arm shapers; and to provide an" beyond each sideof the foot as will be hereafter improved guide roller'construction for radial arm explained. It will be understood that the slide shapers by which the cutter canbe automatically is beveled at its sides to fit the grooves 8 and be disengaged from the work at any time or upon retained thereby, and the sliding surfaces thus completion of the cutting operation. formed will be lubricated by means of a grease A specific embodiment" of this invention is fitting 9,"Wh'ich' communicates with one or more shown in the accompanying drawings in which channels it] extending transversely across the Figure 1 is a fragmentary perspectiveiview slide surfaces and across the grooves 8' as'indishowing the manner in which the'invention is. cated in Fig. 5'. applied-to a radial arm shaper; Also, as shown ihFig. 5', and in order to facili- Fig. 2 is a plan view of the improved" roller tate the installation of the slide T on the bottom slide construction-as taken online 2-2 of Fig; 31 surface of the foot 6, one side of'the slide guide- Fig. 3 is a sectional elevation of the same,,,as. is made in the form of 'a'removable bar H artaken on line 3-3 of Fig.2,1sh'0wing the actuating; ranged as an insert in the fo'otG' at one side of the mechanismand the relation of the deviceto the slide guide'way andhaving one edge beveled to cutter of'aradial'armshaper; provide the respective guide channel 8 for the Fig. 4 is a similar view showing theguide roller slide, The bar I I is secured in place on the foot slide'in'extended position to disengage the cutter 6 y means of Suitable b s l2 Which eKtend' from the work, and downwardly from the uppersurface of the toot Fig. 5' is an end view of the device showing, the 6 through appropriate bores. manner inwhich the guide roller slide is mounted As shown in Fig- S e T s a edt on'it'ssupporting column. 7 extend a substantially equaldi'stance on" each The improved roller slide is intended particud O the pp r 6011mm 5 a d t e left a d larly'for use with radial arm shapers wherein side of "the slide car ies a u de o er 3"WhiCh the cutter projects from the end of apivotally issuitably mounted on the upper side'of the slidemounted arm; which'inturn is automatically acon a ver i lly p d stub shaft M x n in tuated'to'normally swingin'a direction so as to pwa y o the Slide and eel-Trying & ui able cause engagement cfthe cutter with th w rk, bearing I5 which provides for free rotation of This typeof shaper is well known'in the art and the uid r0 e1'1 details of 'the shaper; the arm actuating means, 40 Normally e Slide 7 p o dso that the and the mounting of" the radial arm are th axis of the guide :roller will'be substantially confore not shown, however, a herein how and centric with the axis of the cutter 4 and its spin-- described the *invention is" embodied in' a radial dle 3", and to assure accurate pos ti of the arm shaper comprising a horizontal arm'l having. id o er W h re p ct tothe cutter, in the nora'se'lf contained powerunit ormotor Tm'ounted mm p t a st p block I6 s fi d u t on its outboard end in a vertical position so that" on the upper surface of the slide 1 and is provided the motor can drive 'a spindle '3 which in turn with a set screw I! disposed so that its head'will carries-a cutter 4 arranged'tdrotate on the'ver engage against the support column 5. The'set tical axis. Asupport column 5, for theguideroll- Screw H i th d o the S p block it and er slide, is also rigidly mounted on the 'outboardjso can thus be a j o Set e relationship of. the

roller 13 and the cutter4 and a jam nut l8; threaded on the set screw I1, is provided to lock the set screw in the desired position.

As shown, the stop block 16 is also. arranged t to carrya felt pad [9 which engages the periphery of the guideroller '13 to keep it wiped clean of dust or shavings that might otherwise gather and cause inaccuracy in the shaping operation by coming between the guide roller and the pattern against which it engages,

The automatic actuation of the slide 1, to cause the guide roller l3 to be projected laterally beyond the cutter 4, is obtained by a power means or pneumatic. motor comprising an air cylinder 20 horizontally disposed and housed within the body of the support column 5, as indicated in Figs. 2, 3 and 5. The air cylinder is clamped in place in the support column by means of an end plate 21 which is arranged to tightly set over the outboard end of the air cylinder and to be clamped to the support column 5 by means of suitably disposedbolts 22, which extend through holes drilled in the clamp 2| and are threaded into suitably tapped openings on the side of the support column 5. The end plate 2| is also provided with an air connection 23 which communicates through the end plate with the interior of the air cylinder 20 by means of a passage 24.

A piston 25 is disposed within the air cylinder and is suitably mounted on the end of a piston rod 26 which extends outwardly from the air cylinder through a packing gland 21, suitably mounted on the outer side of the end plate 2| by means of bolts 28. The piston rod 26 is connected at its outermost end to the slide l by means of a suitable bracket 29 which in turn is rigidly secured on the end of the slide I opposite the end on which the guide roller I3 is mounted. The length of the projection of the slide 1 on the opposite side of the column from the location of the cutter and the guide roller. the stroke of the piston .25, and the length of the piston rod 26, are predetermined so that when the piston 25 is at the inner end of the cylinder 24 the slide will be projected outwardly relative to the cutter 4 a distance suificient to completely disengage the cutter from the work and allow the positioning of a new blank over the pattern. This projected relationship of the slide and the innermost position of the piston 25 are shown in Fig. 4 wherein the pattern, which is engaged by the roller I3, is indicated by the numeral 30 and the work is indicated by the numeral 31.

In the operation of the device the piston 25 is actuated by compressed air introduced through the air connection 23 and controlled by a suitable air valve, not shown, which is arranged to automatically deliver air to the cylinder 20 at a predetermined time in the shaping cycle, and to automatically bleed the air from the cylinder 20 after a new blank has been clamped over the pattern 30. It will be understood that such a control valve may be either automatically or manually operated depending upon the nature of the shaper on which the present invention is used. Such automatic or manually operated control valves are well-known in this art and therefore need not be shown or discussed in detail.

Normally the slide '1 will be in its retracted position such that the guide roller or pattern follower l3 will be substantially aligned with the cutter i, in which position the cutter will be engaged with the work tobe shaped while the roller 3 is engaged with the pattern. When the shape ing operation has been completed the piston 25 is actuated to project the slide 7 from the support column 5, in the direction of the cutter, so as to cause the cutter and the radial shaper arm cutter is mounted is normally urged constantly,

on which the cutter is mounted to be pushed laterally away from the work, the roller l3 pushing against the periphery of the pattern, which is fixed on the work table, to accomplish this result. When the cutter 4 is disengaged from the work, the finished work is removed and a new blank is placed over the pattern 30 and is clamped in position by means well-known in the art and, therefore, not shown. The control valve is then operated to permit the air to be bled from the cylinder 29 so that the slide 1 can be pushed back to its normal position.

In radial arm shapers, the arm on which the by suitable means, in a direction so as to move the cutter toward the work, therefore, when the air pressure is released from the cylinder 20, the cutter is automatically brought into engagement with the work and the slide 1 is pushed back or retracted until it is stopped by the stop screw l1 engaging against the foot of the support column 5. At this position the proper depth of cut is had and is maintained by contact of the roller on the periphery of the pattern.

The main advantages of this invention reside in the provision of a power actuated means for disengaging the cutter from the work to allow the removal of the shaped work and the positioning of a new blank on the pattern; and in the provision of such a means that will not only. permit accurate positioning of the cutter with respect to the pattern, but which will also provide for adjustment of the retracted position of the slide to vary the cutter and roller alignment in order to compensate for wear on the cutter.

Further advantages of the invention reside in the fact that the construction permits the radial arm supporting the cutter to be constantly urged resiliently in the direction to move the cutter into the work and provides a means for shifting the cutter away from the work, in order that a new blank may be positioned on the pattern, without the necessity of stopping the cutter rotation or releasing the force urging the cutter into the work. And still further advantages are to be found in the simple and sturdy construction of the device and in its fast and accurate operation whereby the operator may without mechanical interference, more readily remove the finished work and place a new blank thereby improving the efficiency of the shaper and the rate of its output.

Although but one specific embodiment of this invention is herein shown and described, it will be understood that numerous details of the construction shown may be altered or omitted without departing from the spirit of the invention as defined by the following claims.

I claim:

1. In a shaper having a movable radial arm, a cutter spindle and cutter on said arm and movable therewith, and a guide roller support colpower means. 4

2. In a shaper having a radial arm swingable about a fixed axis, a cutter spindle and cutter on said arm, and a guide roller support column rigidly mounted on said arm parallel with said spindle and movable therewith, a slide mounted on said column and having one end extending transversely across the spindle axis, said slide being disposed axially beyond the end of the cutter, a guide roller mounted on said one end of said slide adjacent said cutter on an axis parallel therewith, a pneumatic motor mounted on said column and connected to said slide for shifting said slide a predetermined distance transversely across the cutter axis upon actuation of the motor, and means to introduce compressed air to said motor to actuate the same.

3. In a radial arm shaper having a cutter movable laterally toward and away from the work and normally urged toward the work, a guide roller support column mounted parallel with said cutter and movable therewith, a slide mounted transversely on said column and extending therefrom toward the cutter axis, said slide being disposed axially beyond the end of the cutter and movable relative to the cutter axis in the direction of the work, a guide roller mounted on said slide adjacent said cutter and on an axis parallel therewith, an air cylinder mounted on said column, a piston in said air cylinder having a piston rod extending therefrom, means to introduce compressed air to said cylinder to actuate said piston, and means connecting said piston rod and said slide for shifting said slide and guide moving the roller laterally beyond the cutter and in the direction of the work upon each actuation of said piston.

4. In a radial arm shaper having a cutter movable laterally toward and away from the work and normally urged toward the work, a guide roller support column mounted parallel with said cutter and movable therewith, a slide mounted transversely on said column and extending therefrom toward the cutter axis, said slide being disposed axially beyond the end of the cutter, a guide roller mounted on said slide adjacent said cutter and on an axis parallel therewith, said slide and guide roller being movable relative to the cutter in the direction of the work, an air cylinder mounted on said column, a piston in aid air cylinder having a piston rod extending therefrom, means to introduce compressed air to said cylinder to actuate said piston, means connecting said piston rod and said slide arranged to shift said slide and guide roller relative to the cutter in the direction of the work upon actuation of said piston, and an adjustable stop means on said slide arranged to limit the return movement of the slide and position said guide roller in predetermined relation with said cutter.

5. In a radial arm shaper having a cutter movable laterally toward and away from the work and normally urged toward the work, a guide roller support column mounted parallel with said cutter and movabletherewith, a movable slide mounted transversely on said column and extending therefrom toward the cutter axis in the direction of the work, said slide being disposed axially beyond the end of the cutter, a guide roller mounted on said slide adjacent said cutter and on an axis parallel therewith, an air cylinder mounted on said column above said slide and with its axis parallel therewith, a piston in said air cylinder having a piston rod extending therefrom, means to introduce compressed air to said cylinder to actuate said piston, a bracket rigidly connecting said piston rod and slide whereby said slide and guide roller will shift relative to the cutter in the direction of the work upon actuation of said piston, and an adjustable stop means arranged to limit the movement of said slide in the opposite direction and position said guide roller in predetermined relation with said cutter.

EARL T. PANKONIN.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,690,069 Ferris Oct. 30, 1928 1,928,150 Douglas Sept. 26, 1933 2,005,018 West June 18, 1935 2,091,456 Rybick Aug. 31, 1937 2,264,532 Jackson Dec. 2, 1941 2,451,548 Groen Oct. 15, 1948 2,475,326 Johnson July 5, 1949 

